LaTeX forum ⇒ Math & ScienceHow can I place a dash on top of a variable? Topic is solved

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Ca29
Posts: 2
Joined: Fri Jul 19, 2019 4:42 pm

How can I place a dash on top of a variable?

Postby Ca29 » Fri Jul 19, 2019 4:54 pm

Hi guys,

1 - I am trying to put a trace over variable to symbolize that it is constant.

2 - And I'm also trying to put a point on top of the variable to symbolize that the variable is a rate of change.

Thank you in advance for your attention.

User avatar
Ijon Tichy
Posts: 143
Joined: Mon Dec 24, 2018 10:12 am

Postby Ijon Tichy » Fri Jul 19, 2019 5:31 pm

  1. \documentclass{article}
  2.  
  3. \begin{document}
  4. Usual: $\mathrm{a}$ is a constant, not a variable.
  5. Unusual: $\bar{a}$ is a constant, not a variable.
  6.  
  7. Usual: $\dot{a}$
  8. \end{document}

BTW: Something is either a variable or a constant. You should neither call is constant variable nor variable constant,
Last edited by Ijon Tichy on Sat Jul 20, 2019 1:50 pm, edited 1 time in total.

Ca29
Posts: 2
Joined: Fri Jul 19, 2019 4:42 pm

Postby Ca29 » Fri Jul 19, 2019 9:00 pm

Thanks Ijon :D


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